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Recent questions tagged meter-bridge-and-potentiometer-instrumentation
Questions
Consider the following statements \[\] Statement 1: Voltmeter is much better than a potentiometer for measuring the emf of the cell \[\] Statement 2: A potentiometer draws no current while measuring the emf of the cell
jeemain
physics
current-electricity
cbse
class12
ch3
q148
easy
concepts
meter-bridge-and-potentiometer-instrumentation
asked
Feb 16, 2014
by
thanvigandhi_1
1
answer
Voltmeter reads the potential difference across the terminals of an old battery as $1.4V$ while a potentiometer reads it as $1.55V$. The voltmeter resistance is $280\; \text{ohms}$. Consider the following statements:
jeemain
physics
current-electricity
cbse
class12
ch3
q144
medium
meter-bridge-and-potentiometer-instrumentation
asked
Feb 16, 2014
by
thanvigandhi_1
1
answer
Shown in the figure below is a meter-bridge setup with null deflection in the galvanometer.The value of the unknown resistor $R$ is
jeemain
physics
current-electricity
cbse
class12
ch5
meter-bridge-and-potentiometer-instrumentation
easy
asked
Feb 14, 2014
by
thanvigandhi_1
1
answer
This question has statement I and statement II. Of the four choices given after the statements, choose the one that best describes the two statements.\[\] Statement- I: In a meter bridge experiment, the null point for the unknown resistance is measured. Now, the resistance is put inside an enclosure maintained at a higher temperature. The null point can be obtained at the same point as before by decreasing the value of the standard resistance. \[\] Statement- II: Resistance of a metal increases with temperature.
jeemain
physics
current-electricity
cbse
class12
ch5
meter-bridge-and-potentiometer-instrumentation
easy
asked
Feb 10, 2014
by
thanvigandhi_1
1
answer
A resistance of $2 \Omega$ is connected across one gap of a meter-bridge and an unknown resistance, greater than $2 \Omega$, is connected across the other gap. When these resistances are interchanged, the balance point shifts by $20cm$. The unknown resistance is
jeemain
physics
current-electricity
cbse
class12
ch5
meter-bridge-and-potentiometer-instrumentation
medium
asked
Feb 8, 2014
by
thanvigandhi_1
1
answer
A moving coil galvanometer of resistance $100 \Omega$ is used as an ammeter using a resistance of $ 0.1 \Omega$. The maximum deflection current in the galvanometer is $100 \mu A$. Find the current in the circuit so that the ammeter shows full scale deflection
jeemain
physics
current-electricity
cbse
class12
ch5
meter-bridge-and-potentiometer-instrumentation
medium
asked
Feb 8, 2014
by
thanvigandhi_1
1
answer
The length of the potentiometer wire is l. A cell of emf E is balanced at length $ \large\frac{l}{3}$ from the positive end of the wire. If the length of the wire is increased by $ \large\frac{l}{2}$, at what distance will the same cell give a balance point
jeemain
physics
current-electricity
cbse
class12
ch4
medium
meter-bridge-and-potentiometer-instrumentation
asked
Feb 8, 2014
by
thanvigandhi_1
1
answer
Which of the following has the maximum resistance?
jeemain
physics
current-electricity
cbse
class12
ch4
easy
meter-bridge-and-potentiometer-instrumentation
concepts
asked
Feb 6, 2014
by
thanvigandhi_1
1
answer
To double the full scale reading of any galvanometer turned into a voltmeter, you must
jeemain
physics
current-electricity
cbse
class12
ch4
meter-bridge-and-potentiometer-instrumentation
difficult
asked
Feb 5, 2014
by
thanvigandhi_1
1
answer
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